Redirect Loop
In one sentence
A cycle where A redirects to B and B redirects back to A, or a longer ring that never resolves.
Analogy Mental model
Two people each saying ask him, and the question never reaches anyone who can answer it.
In practice What you actually do
Reproduce it in the network panel and read the sequence. The usual cause is two rules fighting: force HTTPS and force the bare domain, each undoing the other, or a catch-all that redirects the destination as well.
Where people get burned Pitfalls
The browser gives up with too many redirects and the page is unreachable for everyone, including the crawler. This is one of the few SEO failures that is total rather than partial.
This entry was written in English from the Chinese original, not machine-translated. Read the Chinese version →